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MC74VHC157
Quad 2-Channel Multiplexer
The MC74VHC157 is an advanced high−speed CMOS quad 2−channel multiplexer, fabricated with silicon gate CMOS technology. It achieves high−speed operation similar to equivalent Bipolar−Schottky TTL, while maintaining CMOS low−power dissipation.
It consists of four 2−input digital multiplexers with common select (S) and enable (E) inputs. When E is held High, selection of data is inhibited and all the outputs go Low.
The select decoding determines whether the A or B inputs get routed to the corresponding Y outputs.
The internal circuit is composed of three stages, including a buffer output which provides high noise immunity and stable output. The inputs tolerate voltages up to 7 V, allowing the interface of 5 V systems to 3 V systems.
MC74VHC157 Datasheet
